Electric switch.



l. H. RUSBY.

ELECTRIC SWITCH; APPLICATION FI LED JUNE 13, 1917.

1 fi m fi n. Patelited Jan. 7, 1919.

I 2 SHEETS--SHEET F192.

J. H. RUSBY.

ELECTRIC SWITCH.

APPLICATION FILED IUNE I3| 91?.

1,9036% Patented Jan. 7, 1919.

2 8HEETSSHEET 2- INVENTOR ATTORNEYS mounting.

JOSEPH n. nose or nouns, new JERSEY.

ELECTRIC SWITCH.

Specification of Letters Patent.

Application filed June 13, 1917. Serial No. 174,4416.

To all whom 'it hayconcem:

Be it known that JosnPH H. RUsBY, a citizen of the United States,residing at Nutley, in the county of Essex and State of New Jersey, haveinvented new and useful Improvements in Electric Switches, of whichthefollowing is a specification.

This-invention relates tothat class of electric switches in which a pairof spring Y controlled push buttons are operated to snap the blades intoengagement or out of'con tact with the conductor devices to close oropen the circuit.

The invention is designed to comprehend simple and eflicient meanscoacting with a longitudinally slotted hinged lug for universallyadjusting a switch relative to a wall. v

The invention further provides the devices for making and breakingthecurrent 'witha strongly braced frame, and a blade carrier of peculiarshape connected to the frame so that when operating the switch none of.theseactuating parts will accidentally break down or get out'of order.Another object of the invention is, to provide means for securing theblades to a car rier so as to prevent any short circuiting and to givepositive engagement with the contact devices.

The other objects of the invention are morefully described in thefollowing specification and claims and illustrated in the accompanyingdrawing in which Figure 1 represents a front elevation of a switchembodying this invention.

* Fig. 2 is a longitudinal section taken along the line m of the same.

Fig. 3 1s a ,vertical transverse section taken along the line 3 'y of'the same.

Fig. 4 is a front view of a blade carrier. Fig. 5-is a plan or top viewof the same. Fig. 6 is a plan or top view of a frame and latch.

Fig. 7 is a side view of the same.

Fig. 8 is a slde VleW of a rock lever, the blades having beenremoved.

- Fig. 9 isa similar view looking at the opposite side of the device;

Fig. 10 is a. detailed section of a barrel on a larger scale. Fig. 11 isa detailedsection of a blade Figs. 12, 13, 14 and 15 are perspectiveviews of the frame, blade carrier, rock lever and latch respectively.

' an electric circuit.

In this drawing the letter a, designates a Patented J an. 7, 1919.

block which can he made of any good insulating substance preferably suchas porce lam. The block is equipped with a chamher b having a front walla the object of these parts will be hereinafter described. A strap (1 issecured at e to the face of the block. The strap and the block haveholes near each end for the insertion of a post or bolt 7 and alongitudinally. slotted lug g is end of the strap, as denoted in Figs. 1and 2. Tapped holes 7:. located in the end of the strap, one beingopposite the other are for connected by means of the said post to theengagement with ordinary cover securing screws not shown. The posts areconnected at their rear ends to an a rmoring shell 11 made to cover therear of the chamber and extend partly up the sides of the block.

The posts when in place will hold the shell to the block and thusprevent it from slipping backward. r

A device for securing and adjusting the block relative to the wallconsists of a threaded stemj having a head is with a circumferentialgroove we best seen in Fig. 2. The grooved annular portion of the headof the screw engages the lateral walls of the longitudinal slot in thelug g and the threaded stem coacts with the wall devices not shown. Thisconstruction of the screw will permit vertical as well as to and froadjustment of the switch block. Furthermore, the lug g by beingswingingly connected to the strap as descrlbed will when the adjustingscrew is actuated permit the block to be laterally adjusted or properlyalined with the opening in the wall.

.On the face of the block are located a series of conductor devices 11.with contact blades a suspended from the conductors into the said.chamberb of the block. These devices constitute the leads and terminalsof The makeand break mechanism to snap into engagement with theconductor blades includes a frame 3: with a forward portion 9 havingholes for coaction with a pair of screws 1' for fastening the frame tothe front of the Wall 0 of thechamber. A hollowstud or sleeve 8 projectsfrom one side of the frame, and it is fastened to the frame by riveting.one end of it tothe frame as indicated in Fig. 3. V

A barrel t' of practically lar e diameter is mountedto oscillate on thehollow. stud.

cured by riveting tongues 12 forming projections from the periphery tothe open end of the barrel. The rock lever has an upper portion bent atright angles to its body to coact with the shanks of a. coiled sprin 13arranged on the barrel. A pair of push uttons 14 for actuating the rocklever are pivoted at 15 to the lever. At the head of the barrel isfastened a disk 15'' to confine the spring.

A blade carrier has arms 16 and 16, to straddle the barrel and forswinging connection with the frame. The fastening for thediskt includesa pin 17 extending inwardly through the head of the barrel, the end 18thereof being reduced for riveting the disk to the head. The pin alsohas a shoulder portion 19 and'a. pivot end 20, the function of thelatter element will be hereinafter described. The arms 16 and'16 of theblade carrier are parallel to each other and they are joined together bya contiguous front member 21 disposed at right angles to the arms' Thismember has a rearward bend parallel to the arms and a yoke member 22joins the front member to the arm 16. This construction permits thecarrier to be shaped from a single sheet of steel and at the same timeby its peculiar shape it forms a recess to give room for a latchingdevice. The yoke member also limits the movement of the carrier byengaging one or the other side ofthe, cut out portion of-the frame. Thearm 16 has lateral lugs 23 for coaction with a latching member 24described below.

This latching device consists of a link 24 mounted on the pivot 20projecting from the barrel. This link has a lug 25 sliding in a slot 26located in the forward portion of the frame, The latch is on a line withthe pivots 15 near the fulcrum heads 33 tened together of the rockinglever 11 so that when the lever is operated the latchwill move in apractically rectilinearline with the slot.

A pin 27 and the ends of this pin strike against the walls of thechamber to obviate longitudinal movement. The pin projects beyond theframe on one side and its stud on the other so that it will serve formounting a air of blades 28 each. being made of two sections of thincopper. The blades are insulated from the remainder of the mechanism bystrips of mlca 29 located between two metal strips 30 best seen in Fig.11. The lower portions of these elements are fastened together by meansof an eyelet 31 also-employed for mountlng the blades onto thejpin. Theopposite ends of the blade elements are fasouter strip. The: bolt andthe eyelet have fittedlntov apertures 34 in the arms pivotedapproximately is carried by the hollow stud 8' by a bolt-32 riveted tothe of the blade carrier. This method of movably. mounting the blades tothe carr er makes a durable structure giving posltlve alinement of theblades with the contacts and prevents short circuiting of the current.

When it is desired to operate the swltch to close the circuit the upperbutton is pushed downward to rock the lever 42 and torsion or wind thecoiled spring. The lug 25 of the latch has in the interval moved upwardin the slot 26 hence when the lever 4) reaches the end of its stroke,the lug 25 has moved beyond the lugs 23 on the carrier thus releasingthe blades which by the tension of the spring snap into engagement withthe conductors 0' to close the circuit.

I claim 1. An electric switch comprising a longitudinally slotted hingedlug, and an adjusting screw made to engage a support seated in the slot,said screw having an enlargement above and below the slot.

2. An electric switchcomprising an insulating block provided with astrap, a slotted lug member swingingly connected to the strap forlaterally adjusting the block and a screw made to engage a supporthavmga grooved head for en agement with the slot to vertically adjust t eblock.

3. An electric switch comprising'an insulating block provided with astrap, a longitudinally slotted lug member swingingly connected to thestrap for laterally adjusting the block, a screw made to engage asupport having an annular circumferential groove for engagement with theslot for vertical and to and fro adjustment of the block.

4. An electric switch comprising a frame, a hollow stud fixed to theframe, a pin rotatively inserted in the stud with an end projectingbeyond the stud, a blade carrier provided with an eyelet and mountedthereby on said end, said blade carrier being further provided with anaperture, a bolt head secured in the aperture, a switch blade mounted onthe eyelet and the bolt, insulating material arranged on both sides ofthe blade, and a metal strip disposed on each outer side of theinsulatin material; the blade carrier, switch bla e, insulating materialand metal strips being made secure by said eyelet and bolt.

5. An electric switch comprising a vertical supporting frame, a studfixed at a right angle on the frame, a rock lever mounted concentricallyupon the stud, a tubular parallel arms for mounting it on the pin, thearms being provided with a contiguous member to clear the latch andprovide stops to limit the movement of the carrier.

7. An electric switch comprising a frame provided with a pin, a springcontrolled barrel carried by the pin, means for oscillating the barrel,a latch pivoted to the barrel for sliding coaction .with the frame, ablade carrier having parallel armsfor mounting it on the pin, the armsincluding. a contiguous yoke member bent to forma recess for clearingthe latch and to provide stops to engage the frame to limit mcnt of thecarrier.

8. An electric switch comprising a frame I provlded with apin, asprlngcontrolledthe move mounting member carried by the pin, means foroscillating the member, a latch pivoted to the member for slidingcoaction with the frame, a blade carrier havin parallel arms formounting it on the pin, t e arms includ ing a contiguous yoke memberbent to form a recess'for clearing the latch and to provide stops toengage the frameto limit the movement of the carrier.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing JOSEPH H. RUSBY.

